WHAT IS ACRAL LENTIGINOUS MELANOMA

Acral lentiginous melanoma (ALM) is a melanoma subtype characterized by its occurrence in acral locations—the palms of the hands, soles of the feet, and nail beds. It is recognized for its lentiginous (small, flat, brownish spots on the skin, often caused by sun exposure). ALM can look like a dark spot or a bruise that does not get better. This subtype accounts for less than 5% of all cases. Like other flat forms of early melanoma, it may be recognized by the CUBED (Colour, Uncertain, Bleeding, Enlargement, Delay) rules, but may also be amelanotic (non-pigmented, usually red in colour). People of African and Asian descent most often develop this melanoma, but it may occur in any skin type. Acral lentiginous melanoma is best treated with a wide local excision performed by a qualified physician.

Quick Facts

• Acral lentiginous melanoma is a rare form of melanoma
• Acral lentiginous melanoma accounts for less than 5% of all melanoma cases diagnosed.
• Acral lentiginous melanoma is the most common type of melanoma found in people with skin of colour.
• Acral lentiginous melanoma can present as dark spots or bruises on the palms of the hands or soles of the feet that do not go away or won’t heal.